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LINE SIZING
TABLE 2: SUCTION LINE LENGTH/SIZE VS CAPACITY MULTIPLIER(R410A)
Model Size
Suction Line Connection Size
Suction Line Run － Feet
25'
50'
100'
150'
NOTES:
* Standard size
Using suction line larger than shown in chart will result in poor oil return and is not recommended.
TABLE 3 :LIQUID LINE SIZE (R410A)
Line Size
Connection Size
Model Size
(Inch O.D.)
1 1/2 Ton
3/8"
2 Ton
3/8"
2 1/2 Ton
3/8"
3 Ton
3/8"
3 1/2 Ton
3/8"
4 Ton
3/8"
5 Ton
3/8"
NOTES:
* Standard line size
N/A Application not recommended.
1 1/2 Ton
2 Ton
3/4" O.D.
3/4" O.D.
5/8 Opt.
5/8 Opt.
3/4* Std.
3/4* Std.
Optional
1.00
1.00
Standard
1.00
1.00
Optional
0.97
0.97
Standard
0.98
0.98
Optional
0.94
0.94
Standard
0.95
0.95
Optional
0.90
0.90
Standard
0.92
0.92
Line Size
Compressor
Connection And
Type
Line Size
(Inch O.D.)
1/4
Scroll
5/16
3/8*
Rotary
3/8*
1/4
Scroll
5/16
3/8*
Rotary
3/8*
1/4
Scroll
5/16
3/8*
Rotary
3/8*
5/16
Scroll
3/8*
5/16
Scroll
3/8*
3/8*
Scroll
1/2
3/8*
Scroll
1/2
2 1/2 Ton
3 Ton
3 1/2 Ton
3/4" O.D.
3/4" O.D.
3/4" O.D.
5/8 Opt.
5/8 Opt.
5/8 Opt.
3/4* Std.
3/4* Std.
3/4* Std.
1.00
1.00
1.00
1.00
1.00
1.00
0.97
0.97
0.98
0.98
0.99
0.98
0.94
0.94
0.95
0.96
0.97
0.97
0.90
0.90
0.91
0.93
0.96
0.96
Liquid Line Size
Outdoor unit above or below indoor coil
Total Equivalent Length - Feet
25
50
75
Maximum Vertical Separation - Feet
25
40
25
25
50
60
25
50
60
25
30
30
23
N/A
N/A
25
36
29
25
50
60
25
30
30
25
N/A
N/A
25
49
38
25
50
60
25
30
30
25
50
37
25
50
60
25
23
4
25
50
43
25
46
38
25
50
56
25
50
56
25
50
60
4 Ton
5 Ton
7/8" O.D.
7/8" O.D.
3/4 Opt.
1 1/8 Opt.
7/8* Std.
7/8* Std.
1.00
1.00
1.00
0.99
0.98
0.99
0.98
0.98
0.95
0.98
0.97
0.94
0.92
0.97
0.96
0.90
100
125
150
9
N/A
N/A
58
40
30
60
40
30
27
N/A
N/A
N/A
N/A
N/A
23
16
9
60
40
30
N/A
N/A
24
N/A
N/A
N/A
27
17
6
60
40
30
N/A
N/A
22
22
7
N/A
60
40
30
N/A
N/A
N/A
36
30
24
30
22
15
55
40
30
44
32
20
60
40
30
13
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